The word stockbrokers is playable in Words With Friends™, but 1 blank substituting for the letter 'k' is required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 21
Highest Scoring Words With Friends™ Plays In The Letters stockbrokers
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Seven Letter Word Alert: (39 words)
besorts, bookers, booster, booters, brocket, brokers, cookers, corkers, corsets, crosser, escorts, october, rebooks, reboost, reboots, recooks, recorks, recross, rectors, reroots, resorbs, resorts, restock, rockers, rockets, rooster, rooters, rosters, scooter, scorers, sectors, sockets, sorbets, sorters, stocker, stokers, strobes, stroker, strokes